answer:How to stop taking Lamictal According to GSK: “Lamictal should be tapered over a period of at least 2 weeks (approximately 50% reduction per week).” Our rule of thumb: decrease the dosage at the same rate you increased it. Otherwise as slowly as you can. 25–50mg a day every week until you’re down to 100mg a day, then 25mg a day per week. If you have to stop due to a really serious side effect, such as SJS (Stevens-Johnson Syndrome, a.k.a. The Rash or the Lamictal rash), then you and your doctor (or whoever is in the emergency room) will have to figure out a faster schedule. Read more about taking and discontinuing Lamictal “Slow and steady seems to be the recommendation